One more note here:
Josh Boyer verified that it works perfectly on a local machine, my tests were done from a RHEL-6.1 x86_64 machine via ssh -X to the PPC box and thats when i got the error.
Thanks & regards, Phil

OK, seems that something with my local x server seems to be fubar, it works nicely for others over SSH.
Closing as notabug then and i'll investigate where my local x server issue comes from.
Thanks & regards, Phil

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